Traces of paleoearthquakes in the Quaternary deposits of intermontane basins in central Gorny Altai

Author:

Deev E.V.1,Zolnikov I.D.2,Goltsova S.V.1,Rusanov G.G.3,Emanov A.A.1

Affiliation:

1. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia

2. V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia

3. Gorny Altai Expedition, ul. Sovetskaya 15, Maloeniseiskoe, Biysk raion, Altai krai, 659370, Russia

Abstract

Abstract Study of the sections of Neopleistocene–Holocene deposits filling the basins in central Gorny Altai has revealed earthquake-induced soft-sediment deformation (seismites). They formed as a result of the brittle deformation of deposits and liquefaction of loose water-saturated sediments under vibration seismic impact. The paleoearthquakes resulting in such seismites had the minimum intensity I = 6 and magnitude M = 5–6. Hence, the study region underwent strong earthquakes in the Neopleistocene–Holocene.

Publisher

GeoScienceWorld

Subject

Geology,Geophysics

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